Buoyancy
Underwater gliders convert buoyancy to thrust, using wings, or more recently hull shape (SeaExplorer Glider). Buoyancy is made alternatively negative and positive, generating tooth-saw profiles.
Read more about this topic: Marine Propulsion
Famous quotes containing the word buoyancy:
“The boatmen appeared to lead an easy and contented life, and we thought that we should prefer their employment ourselves to many professions which are much more sought after. They suggested how few circumstances are necessary to the well-being and serenity of man, how indifferent all employments are, and that any may seem noble and poetic to the eyes of men, if pursued with sufficient buoyancy and freedom.”
—Henry David Thoreau (1817–1862)
“She keeps
The Topic over intellectual deeps
In buoyancy afloat. They see no ghost.
With sparkling surface-eyes we ply the ball:
It is in truth a most contagious game:
Hiding the Skeleton, shall be its name.”
—George Meredith (1828–1909)